<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body data-target="#selector" data-spy="scroll">
<nav class="navbar navbar-default navbar-fixed-top" role="navigation" id="selector">
    ...
</nav>
<h4 id="fat">@fat</h4><p>...</p>
....
</body>
</html>